I'd try and paint that power cord the same color as the wall if you can't find another way to hide it. The other cable won't be so noticable if you could stick it closer to the doorframe, maybe some doublesided tape?
I think we're gonna get a chest of drawers to put under the TV and put a DVD player on it. That will hide the power cord. I am gonna have to tack the cable to the door casing unless I pull up the edge of the carpet or something.